Like sour milk (3)
I believe the answer is:
off
(Other definitions for off that I've seen before include "No longer available" , "Away, substandard" , "Rotten" , "Not working - started" , "Unsatisfactory" .)
I believe the answer is:
off
(Other definitions for off that I've seen before include "No longer available" , "Away, substandard" , "Rotten" , "Not working - started" , "Unsatisfactory" .)